AP BIOLOGY

Detailed explanation-1: -survival of the fittest, term made famous in the fifth edition (published in 1869) of On the Origin of Species by British naturalist Charles Darwin, which suggested that organisms best adjusted to their environment are the most successful in surviving and reproducing.

Detailed explanation-2: -The basic idea of biological evolution is that populations and species of organisms change over time. Today, when we think of evolution, we are likely to link this idea with one specific person: the British naturalist Charles Darwin.

Detailed explanation-3: -Survival of the fittest means that organisms that are better adapted to their environment are best suited to survive and successfully reproduce. “Survival of the fittest” is an expression, developed from Darwin’s theory of evolution.

Detailed explanation-4: -Consequently, adult survival has often been regarded as more important than reproduction to the viability of slow-growing populations: Lebreton and Clobert (1991) argued that any observed changes in population growth rates of species with slow growth are likely due to changes in adult survival.

Detailed explanation-5: -Natural selection is the theory that only the strong survive. For example, the animals that can outrun their predators live to pass on their speedy genes; the slow are eaten. Natural selection is part of Charles Darwin’s Theory of Evolution.